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Table 1 Sequence types and their interpreted susceptibility and minimum inhibitory concentrations of the eight Brachyspira isolates/strains

From: First identification and characterisation of Brachyspira hyodysenteriae in pigs in Hong Kong

Isolate/strain

Species-specific sequence type

Susceptibility (MIC in μg/ml)

Tylosin

Lincomycin

Tiamulin

B. hyodysenteriae C4B8

250

R (> 16)

R (> 72)

S (< 0.063)

B. hyodysenteriae C5B9

250

R (> 16)

R (> 72)

S (< 0.063)

B. hyodysenteriae B78T

56

I (4)

S (< 2)

S (< 0.063)

B. hyodysenteriae B204

54

R (> 16)

I (36)

S (< 0.063)

B. pilosicoli C4B3

NK

R (> 16)

I (16)

S (< 0.063)

B. pilosicoli C4B8

NK

R (> 16)

I (16)

S (< 0.063)

B. pilosicoli 95/1000

82

S (< 0.5)

I (36)

S (< 0.063)

B. pilosicoli WesB

68

S (< 0.5)

S (< 2)

S (< 0.063)

  1. The isolates C4B8, C5B9, C4B3 and C4B8 originated from a pig herd in Hong Kong Special Administrative Region. Minimum inhibitory concentrations (MIC) were determined by agar dilution and interpreted according to [11] for tylosin, lincomycin and to [10] for tiamulin.
  2. NK not known, S susceptible, I intermediate, R resistant